The Scanner Pro app, which sells for $6.99, uses your iPad or iPhone camera to take a high-res picture of documents and other things. Naturally, the larger screen of the iPad makes things easier but if all you have is an iPhone then you can use that too. Once you take a picture of the document you can send it to the cloud via Evernote, DropBox, Google Docs, etc... to store it. Your scanned document can then be printed at any printer that supports Air Print, turning your iPad or iPhone into an inexpensive portable printer/copier.
In addition to that, documents can be sent directly to any computer via local WiFi network, which makes getting PDFs into a computer faster and simpler. Scanned documents can also be faxed over the web for $0.99, which is just like making an in-app purchase. You can manually enter the fax recipient or you can pick one from a list of contacts and the fax is then sent in a few seconds once the payment transaction goes through.
When you take a picture of a document with the app, which also supports multiple pages, the app automatically determines the document borders before saving. Each page is clearly marked on the document and can be easily moved by touch, which is an important feature, as it provides you with a nice way to limit a copy/fax to only some of the scanned pages if need be.
The app itself can save pages as JPEG images or PDF documents and it is also possible to open the scanned image in an appropriate app for handling the selected document type from directly within Scanner Pro. This allows you to further tweak the pages and documents whenever you need to. If you occasionally need to scan, copy or fax something and you don't really feel the need to have an actual copier around gathering dust, the Scanner Pro app is definitely something you should check out. For $6.99 you really can't go wrong.
Source: ZDNet - Turn your iPad into a scanner, copier, and fax with Scanner Pro